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Wastewater from a cement factory contains 0.25 g of Ca2+
Chapter 14, Problem 57P(choose chapter or problem)
QUESTION:
Problem 57P
Wastewater from a cement factory contains 0.25 g of Ca2+ ion and 0.056 g of Mg2+ ion per 100.0 L of solution. The solution density is 1.001 g/mL. Calculate the Ca2+ and Mg2+ concentrations in ppm (by mass).
Questions & Answers
QUESTION:
Problem 57P
Wastewater from a cement factory contains 0.25 g of Ca2+ ion and 0.056 g of Mg2+ ion per 100.0 L of solution. The solution density is 1.001 g/mL. Calculate the Ca2+ and Mg2+ concentrations in ppm (by mass).
ANSWER:
Solution 57P:
Here, we are going to determine the concentration of the ions in ppm by mass.
Step 1:
We know that,
---(1)
Given that,
Volume of the solution =100 L =(100 x 1000) mL
= 105 mL
Density of solution = 1.001 g/mL =
= 1.001 g